the u.s. attorney's office is not opposing the request for the certificate of innocence that he needs for restitution, up to $50,000 for every year locked up. although the judge threw out his conviction, she has remained silent with the court. she said that tribble needs the document. he's jobless and virtually homeless. and&this is a puzzling twist. two other d.c. men who were convicted and exonerated based on hair analysis by the fbi have both received innocence. he's precluded by law from commenting on the pending case. >> we know of three cases where hair analysis is discredited and wrongful convictions in d.c. are there going to be anymore? >> it's possible, brian, and that is because the u.s. attorney's office and the justice department launched an extensive review into the 60s, as we're told, to look at hair analysis cases. back then, the fbi had's view of hair analysis that doesn't work and the dna is proving that and there might be other people sent to prison on hair analysis and that